Notifier CPU2-640 (also searched as CPU2640) is the central processing unit for an NFS2-640 system, with an integral 3.0 A (6.0 A in alarm) power supply.
The CPU2-640 includes the control panel factory-mounted on a chassis, one signaling line circuit expandable to two, and a documentation kit. Order one per system, or as necessary on a network system (up to 103 network nodes). It is the processing and power core of the panel rather than a complete standalone system, so a display is a separate decision: the KDM-R2 80-character backlit LCD with QWERTY keypad is required for each stand-alone 80-character display system, and on single-CPU systems the optional NCA-2 Network Control Annunciator can serve as the primary display.
Specifications
| Signaling line circuits |
1, expandable to 2 |
| Devices per loop |
159 detectors and 159 addressable modules |
| Software zones |
99 programmable, plus 14 special programming zones |
| Primary input power |
120 VAC, 50/60 Hz, 5.0 A |
| Total 24 V output |
6.0 A in alarm, shared by all internal circuits |
| Notification circuits |
Four, 1.5 A each |
| Battery charger |
18 AH to 200 AH (batteries over 26 AH need a separate cabinet) |
| Cabinet |
CAB-4 Series; requires BP2-4 Battery Plate |
| Standards |
UL 864 10th edition; UL 2610; UL 2572 (NFS2-640 version 20 or higher); ULC-S527-11 |
Installation notes
- The 6.0 A is a shared pool, not per-circuit headroom: four 1.5 A NACs sum past the supply, so use the current draw calculation sheet in the Installation Manual.
- Board current draw is 0.250 A plus 0.035 A for each NAC in use; a KDM-R2 adds 0.100 A.
- The CPU2-640 is a 120 VAC board. For 220/240 VAC service order the CPU2-640E.
- On network systems of two or more nodes, one network display (NCA-2 or NCS/ONYXWorks) is required for every system.
Related models
CPU2-640E (240 VAC), CPU2-640-FR / -PO / -SP (French, Portuguese and Spanish versions), KDM-R2 display and NCA-2 network annunciator.
Documents
FAQ
Does the CPU2-640 include a display?
No. The KDM-R2 display is required for each stand-alone 80-character display system; on single-CPU systems the optional NCA-2 can serve as the primary display.
Can a second SLC loop be added?
Yes. It ships with one SLC expandable to two with the LEM-320 Loop Expander Module, for up to 159 detectors and 159 modules per loop.
What power does it provide?
An integral 3.0 A (6.0 A in alarm) power supply with four Class A/B NACs. The CPU2-640E is the 240 VAC version.
What batteries are supported?
The charger supports 18 to 200 AH batteries; batteries larger than 26 AH need the NFS-LBB battery box, and the BP2-4 battery plate is required.
